Force-Deflection Leak Detection for Mobile Device Seals
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Solution Overview
Problem
Conventional leak testing systems for mobile devices require pressurized chambers and manual port sealing, making them difficult to automate and inefficient for evaluating environmental seals in mobile devices.
Innovation Solution
A mechanical diagnostic tool that applies a force perpendicular to the display surface of a mobile device to measure deflection, using a linear motor and computer system to analyze force-displacement data and determine seal integrity through graphical or machine learning models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional pressurized air or vacuum systems are used for leak testing, then leak detection capability is achieved, but device complexity and ease of operation deteriorate due to requiring pressurized chambers, manual port sealing, and difficulty in automation
Solution Approach 1:
The patent extracts the leak detection function from complex pressurized chamber systems and implements it through a simple force application mechanism. By applying force directly to the display and measuring deflection, the system eliminates the need for pressurized chambers, vacuum systems, and manual port sealing while maintaining reliable leak detection capability.
Solution Approach 2:
The patent replaces the pneumatic/mechanical pressurized chamber system with a direct mechanical force application system. Instead of using air pressure or vacuum to detect leaks, the system applies controlled mechanical force to the display and measures the resulting deflection, substituting a simpler mechanical approach for complex pneumatic systems.
2Reliability
If pressurized chambers and manual port sealing are used, then leak testing can be performed, but productivity and ease of operation worsen due to difficulty in automation and manual intervention requirements
Solution Approach 1:
The patent implements a self-contained testing system where the mobile device itself serves as the test subject without requiring external pressurized chambers or manual sealing operations. The force application and deflection measurement are integrated into a single automated process, eliminating manual intervention and improving testing efficiency while maintaining accurate seal evaluation.
Solution Approach 2:
The patent employs dynamic force application and real-time deflection measurement to enable automated leak detection. By applying controlled force variations and continuously monitoring display deflection, the system achieves both high productivity through automation and high reliability in seal evaluation without requiring manual port sealing or pressurized chambers.
3Productivity
If force deflection measurement is applied to the display, then automation and productivity improve, but measurement precision may worsen if the display structure itself deflects
Solution Approach 1:
The patent introduces a reference measurement system that acts as an intermediary to distinguish between display deflection and frame deflection. By measuring the deflection of a reference point on the frame and comparing it with the display deflection, the system can isolate the seal integrity signal from structural deflection noise, maintaining measurement precision while enabling full automation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables automated and efficient evaluation of environmental seals by analyzing force-displacement curves to identify leaks, improving the accuracy and efficiency of mobile device testing.
Implementation Method 1
A mechanical diagnostic tool that applies a force perpendicular to the display surface of a mobile device to measure deflection, using a linear motor
Implementation Method 2
Force-deflection based leak detection for mobile device... provides a mechanical force to an electronic display of a mobile device to evaluate environmental sealing
Data Source
AI summary
A system of evaluating a mobile device includes a sensing device that captures data while a force is being applied to a display of the mobile device while the mobile device is held stationary; and a processing device to process the data and determine the force applied and a displacement of the display while the force is being applied.